A.Calculate the sample size after the test is started.

B.Wait for the calculated sample size to be reached before stopping the test.

C.Adjust the confidence interval before the test is launched.

D.Adjust the confidence level when completing pre-test segmentation.

A.To serve as the default content for users who are not part of the test

B.To measure the impact of the test on a specific subset of users

C.To control the distribution of traffic evenly across variations

D.To ensure that the test does not adversely affect the website's performance